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Abstract Combustion chamber manufacturing is one of the most important stages in gas turbine industry. Proper combustor design is ciritical to establish maximum unit performance, longest life time and to meet the environmental regulations. The combustor had to be designed according to strict principles to achieve several demands like high comustion efficiency, wide flame stability limits, low emissions of smoke and gaseous pollutant species, small physical size and weight and complete combustion of the fuel. The present work is devoted to study numerically the effect of swirl type annular combustor geometry on natural gas combution charchteristics. |